Drosophila gouveai is a cactophilic species endemic to South America. In southeast Brazil it is found on summits of isolated hills, which apparently are current refugia resulting from climatic changes during the Quaternary Period. It breeds only in necrotic cactus cladodes of Pilosocereus machrisii. Temporal differences in necrotic cactus availability could have a great impact upon D. gouveai p...

We examined the relationship between developmental stress and ̄uctuating asymmetry in a natural population of Drosophila pachea, a cactophilic fruit ̄y. Cactus host variation was found to exert signi®cant in ̄uence on the size of legs and of wings of emerging adults, but stressors associated with reduced size did not show the predicted increase in ̄uctuating asymmetry for either leg or wing length....

We determined the prevalence of Sin Nombre virus antibodies in small mammals in southeastern Arizona. Of 1,234 rodents (from 13 species) captured each month from May through December 1995, only mice in the genus Peromyscus were seropositive. Antibody prevalence was 14.3% in 21 white-footed mice (P. leucopus), 13.3% in 98 brush mice (P. boylii), 0.8% in 118 cactus mice (P. eremicus), and 0% in 2...

The pitahaya, pitaya or dragon fruit is an exotic fruit that comes from a type of cactus and has a lot of beneficial nutrients for health. It is a cacti plant, and as such, very resistant to droughts. The plant is a succulent, rustic cactus, with long triangular stems, whose tentacles search the rocks incessantly for which they feel a special predilection, whether there is earth nearby or not; ...